With a dignified veteran's body and a long white beard, summoner mage Dunbalf was one of the strongest player characters in the virtual reality online multiplayer roleplaying game Ark Earth Online, even heralded as a one-man army. Together with the "Nine Wise Mages" and King Solomon, they formed the mage player Kingdom of Alcait. But one day, Dunbalf and the other Nine Wise Mages suddenly go missing, leaving no trace behind. In an effort to spend his expiring credits, Dunbalf had purchased a cosmetic kit and tinkered with his character; however, he accidentally fell asleep during the customization process. Upon waking up, Dunbalf not only notices that the world of Ark Earth Online has become more realistic, but also discovers that he has turned into a cute girl! After reaching Alcait, he learns it has been 30 years since he supposedly disappeared. Now tasked with finding the other missing mages by King Solomon, the avid role player proclaims his new identity as Mira—the Pupil of the Wise Man Dunbalf—and ventures forth to prove his legacy.

Tooru Kirishima's notoriety is spread far and wide in the underworld. He is most commonly known as "The Demon of Sakuragi"—a man who is not afraid to resort to violence if deemed necessary. After almost jeopardizing a peace treaty, his boss tasks him with the most difficult job he has ever had: taking care of seven-year-old Yaeka Sakuragi—the boss' precious daughter—so that Tooru understands what it means to be responsible for another life. At first, the two do not seem to meet eye to eye, as Tooru has no clue on how to communicate with Yaeka, and the young girl is not used to expressing her emotions. However, as time goes on, they come to understand each other despite their differences. The fearsome right-hand man of a yakuza boss and the child he must protect are about to learn that family is not always bound by blood.

A nameless sword wakes up to discover he has been reincarnated from his former life as a human. With his power of telekinesis, he moves around this new world, acquiring several skills and abilities. When the sword comes upon a forest filled with monsters, he meets a young girl fleeing from a beast. Grabbing the sword, the girl easily defeats the monster. After introducing herself as Fran, she names the sword "Shishou" and officially becomes his wielder. The two set out to become adventurers, but unfortunately for Fran, she is a member of the Black Cat Tribe—a Beastkin group with a bad reputation. No member of this tribe has ever evolved into a mightier beast, but Fran plans to be the first and achieve her parents' dream. As Shishou promises to remain her sword until she attains her goal, they form an unstoppable partnership of impressive strength.

Blackmailed into playing a dating simulator set in a matriarchy, an ordinary man must put up with the unbearable and convoluted world until he clears the game. After countless days of grinding, he finally manages to beat it, but his hardcore gaming comes at a cost: extreme sleep deprivation and hunger. While heading out to the convenience store to solve one of these problems, the man tumbles down the stairs and falls unconscious, only to wake up to the worst possible realization—he has been reincarnated into the game as the mob character Leon Fou Bartfort. Now trapped in a world he despises, Leon must use his knowledge of the game to navigate through the plot safely and sustain himself in a society where the odds are heavily stacked against him.